Folder for overhead projector

ABSTRACT

A three leaf folder for use on an overhead projector, with each leaf consecutively hinged. Two leaves of the folder are constructed with an indexing system for positioning the folder on a coupling member that predetermines the proper relationship between the projector and transparencies to be viewed and one transparency to another. While projection and manipulation occur, the third leaf provides an exposed surface upon which instructional material is provided.

United States Patent 1 Bisberg 1 Jan. 9, 1973 54 FOLDER FOR OVERHEAD3,544,211 12 1970 Albee ..353/120 PROJECTOR Primary Examiner-William D.Martin, Jr. [76] Inventor: Aaron M. Bisberg, PO. Box 14 Attomey BurgeSSDinklage & Sprung North Station, White Plains, NY. 10603 [57] ABSTRACT[22] Filedi l 1970 A three leaf folder for use on an overhead projector,with each leaf consecutively hinged. Two leaves of the [21] Appl' 72064folder are constructed with an indexing system for positioning thefolder on'a coupling member that [52] US. Cl ..353/120,353/35predetermines the P p relationship between the [51] Int Cl Gosh 21/00projector and transparencies to be viewed and one transparency toanother. while projection and [58] Field of Search ..353/120, 35,40/106.l I manipulation occur, the third leaf provides an exposedsurface upon which instructional material is provided. [56] ReferencesCited 5 Claims, 3 Drawing Figures UNITED STATES PATENTS 3,524,703 8/1970Wright ..353/35 PATENTEUJAN 91975 3, 709,590

8 Fl (3. 2 i I 2 12 I N VENTOR. 44/90 M 555226 FOLDER FOR OVERHEADPROJECTOR The invention relates to a folder for the storage andprojection of transparencies on an overhead projector.

Overhead projectors are used widely for presentations of educational andcommercial material using a transparent stage on which projectableimages are positioned. Indexing means are sometimes provided to ensureproper positioning of the projectable image relative to the stage.

With more complex presentations involving multiple images and/or textualmaterial to which the operator wishes to refer while projecting theimages, it is sometimes found that the images are not in proper sequenceor some have been misplaced. Attempts have been made to solve this byuse of binders in which the projectable images and textual matter arebound. While these binders constituted an improvement over a looseassemblage of independent pages, they did not always permit the operatorto see the textual matter simultaneously with the projection of theimages. Moreover, excessive manipulation of the elements was necessaryto prepare the binder for use by the operator.

It is accordingly an object of the invention to provide a simple folderfor storing, projecting and viewing multiple and/or composite imageswhile simultaneously maintaining textual matter in position forreference by the operator.

This and other objects and advantages are realized in accordance withthe present invention wherein there is provided a folder comprisingthree consecutively hinged leaves. Two leaves of the folder areconstructed with an indexing system for positioning the folder on acoupling member that predeterrnines the proper relationship between theprojector and transparencies to be viewed and one transparency toanother. The multiple transparencies together constitute the first leaf.

The invention will be described more fully with reference to theaccompanying drawings, wherein:

FIG. 1 is an exploded perspective view showing the relation of anoverhead projector to the novel folder with an intermediary coupler;

FIG. 2 is a perspective view showing the components of FIG. 1 inoperative position; and

FIG. 3 is a perspective view of the folder of FIG. 1 arranged fornon-projection presentation and individual study.

Referring now more particularly to FIG. 1, there are showntransparencies or overlays 8, also known as the first leaf, which carryimages for presentation and teaching on the overhead projector 1; thesetransparencies 8, considered the first leaf, are bound into a filefolder-like device 13 of any suitable material. When the transparencies8 are not projecting, both the back cover 9, the second leaf, and frontcover 10, the third leaf, act to protect the transparencies 8. Thetransparencies 8 and folder 13, comprising covers 9 and 10, are bound toone another at edge 11 by any means suitable to freely permit thetransparencies to turn outapproximately 180 for projection, and beyond,to return to the underside of the back cover for separate projection ofother transparencies. The folder 13 may be tabbed 12 to expedite storageand retrieval.

The folder 13 element is placed in working relationship to the overheadprojector through a coupler 14 consisting of a coupler frame 3, a devicefor rigid connection to the projector such as suction cups 4 or anyother grasping device, and a folder support 2. The coupler 14incorporates an indexing system including a pair of pins 6 for registrywith corresponding holes in the first and second leaves to locate andhold the folder in such a manner as to permit the transparencies whenprojected to properly seat on an additional pair of pins 7 therebycontrolling the proper registry of multiple image projection. Theaperture 15 may be an opening in the coupler 14 or be closed by anytransparent material permitting the transmission of light.

Referring now to FIG. 2, the folder 13 is positioned on the coupler 14with the holes on folder 13 in registry with pins 6 and with edge 11positioned between pins 6 and 7. The coupler 14 is in turn related tothe projector l with the first leaf 8' now positioned over aperture 15.The supporting member 2 is placed in an approximately position tosupport the second and third leaves. Multiple transparencies 8' can beprojected by folding two or more transparencies 8 onto aperture 15.

To displace transparencies 8' by other transparencies 8, the folder 13is removed from the coupler 14 and the transparencies are folded undersecond leaf 9. The folder 13 is then replaced on coupler l4 and firstleaf 8 can be folded onto aperture 15 for projection.

The exposed surface of third leaf 10 carries unencumbered instructionaland procedural notes 16, and is supported in position by supportingmember 2 which extends beyond the second leaf 9.

In this manner, one or more transparencies overlay the aperture 15 so asto projected, other transparencies are held on the second leaf ready foroverlay and the textual matter is visible to the operator, the secondand third leaves being supported in open position by the elongatedsupport member.

The folder is also suited for use without a projector, as a desk-topstudy aid or presentation. In such use, the coupler 14 is placed on aflat surface, such as a desk or table, with folder support frame 2 inobtuse angle position. Support frame 2 is kept in easel position byeasel position lock 18. The folder 13 position 'is reversed from itsprojection position and is now placed with the second leaf over aperture15, and with third leaf 10 opened away from supporting member. Areflecting board 17 which may be hinged at 11, or be a separate unit, orbe an integral part of the support member 2, is located in the obtuseangle position. Transparencies 8 are then folded onto the reflectingboard as desired.

Multiple images can be utilized by the simultaneous use of two or moretransparencies 8' on the reflecting board 17. Displacement oftransparencies 8 is accomplished by lifting the folder 13 from coupler14 and turning transparency 8" under second leaf 9 into position 8".With folder l3 replaced, transparencies 8 can be moved into position 8'.

While the drawings show a wire-type hinge for edge 11, a fabric-typetaped hinge or a loose-leaf hinge could also be used. The hinge betweenthe second and third leaves can constitute a simple fold in a cardboardbacking or can be similar in construction to edge 11.

The indexing means have been shown as two pairs of pins on the couplerand corresponding holes on the folder but other equivalent indexers maybe substituted, e.g. a stepped, profiled frame for use withtransparencies of precise dimension, or matching notches on coupler andfolder.

The support member 2 is shown as a wire loop projecting a distancegreater than the depth of one of the leaves of the folder. It could aswell be a full sheet of material, e.g. plastic, cardboard, metal, andthe like. It can be made to hold in any of at least three positions,i.e. fully closed, fully open and partially open at an obtuse angle bynotches, springs, slots, and the like. Alternatively the supportingmember may comprise a separable member capable of being joined to theframe in either the partially opened or fully opened position, thejoinder being effected by providing the frame with slots into which saidmember may be slid.

Additional leaves may be added to the third leaf as desired, being madetransparent for projection or containing additional textual matter.

It will be appreciated that the instant specification and examples areset forth by way of illustration and not limitation and that variousmodifications and changes may be made without departing from the spiritand scope of the present invention.

What is claimed is:

l. A folder adapted for use with a coupling member disposed on anoverhead projector, said folder comprising first, second, and thirdconsecutively hinged leaves, indexing means on said first and secondleaves symetrically disposed relative to the connecting hingetherebetween for positioning said folder relative to said couplingmember in predetermined working relationship, at least said first leafbeing transparent, at least one transparent overlay hinged at saidconnecting hinge so as to be displaceable between a position overlayingsaid first leaf and position overlaying said second leaf, said overlaybeing provided with indexing means in registry with those of said firstand second leaves, and instructional material provided on the exposedface of said third leaf in operating position.

2. A folder according to claim 1 in combination with a coupling member,said coupling member including a frame for positioning on the stage ofan overhead projector, said frame being provided with indexing means forregistry with said indexing means of said first and second leaves and ofsaid overlay, said coupling member further including a supporting membercooperating therewith so as to be capable of being located in a firstposition to form an angle of about with said frame and in a secondposition forming an obtuse angle with said frame.

3. A combination according to claim 2 wherein said supporting membercomprises a hinged element and means for fixing it in either of said twopositions.

4. A combination according to claim 2 wherein said supporting membercomprises a separable member capable of being joined to said frame ineither of said two positions.

5. A combination according to claim 2, wherein said supporting memberextends from said frame a distance greater than the width of said secondleaf thereby also to support said third leaf.

1. A folder adapted for use with a coupling member disposed on anoverhead projector, said folder comprising first, second, and thirdconsecutively hinged leaves, indexing means on said first and secondleaves symetrically disposed relative to the connecting hingetherebetween for positioning said folder relative to said couplingmember in predetermined working relationship, at least said first leafbeing transparent, at least one transparent overlay hinged at saidconnecting hinge so as to be displaceable between a position overlayingsaid first leaf and position overlaying said second leaf, said overlaybeing provided with indexing means in registry with those of said firstand second leaves, and instructional material provided on the exposedface of said third leaf in operating position.
 2. A folder according toclaim 1 in combination with a coupling member, said coupling memberincluding a frame for positioning on the stage of an overhead projector,said frame being provided with indexing means for registry with saidindexing means of said first and second leaves and of said overlay, saidcoupling member further including a supporting member cooperatingtherewith so as to be capable of being located in a first position toform an angle of about 180* with said frame and in a second positionforming an obtuse angle with said frame.
 3. A combination according toclaim 2 wherein said supporting member comprises a hinged element andmeans for fixing it in either of said two positions.
 4. A combinationaccording to claim 2 wherein said supporting member comprises aseparable member capable of being joined to said frame in either of saidtwo positions.
 5. A combination according to claim 2, wherein saidsupporting member extends from said frame a distance greater than thewidth of said second leaf thereby also to support said third leaf.